Question

Which of the following are compounds ?
(i) CO
(ii) No
(iii) NO
(iv) Co
(a) (i) and (ii)
(b) (ii) and (iii)
(c) (i) and (iii)
(d) (ii) and (iv)

Answer 1

Answer:

Option (c) is correct ......

Answer 2

option (c) (i) and (iii) are compounds.

• A compound is an electrically neutral substance made up of two or more different atoms held together by a chemical bond.
• NO is a compound since it is made up of two atoms of different elements - NItrogen(N) and Oxygen(O). Its name is Nitric oxide.
• CO is a compound as it is made up of two different atoms of different elements- Carbon(C) and Oxygen(O).
• Whereas No and Co are not compounds these are atoms of Nobelieum and cobalt respectively.

Hence options (c) (i) and (iii) are compounds.

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